Sexual deprivation increases ethanol intake in Drosophila.
Sexual deprivation increases ethanol intake in Drosophila.
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DOI:
10.1126/science.1215932
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发表时间:
2012-03-16
期刊:
影响因子:
--
通讯作者:
Heberlein U
中科院分区:
文献类型:
--
作者:
Shohat-Ophir G;Kaun KR;Azanchi R;Mohammed H;Heberlein U
The brain's reward systems evolved to reinforce behaviors required for species survival, including sex, food consumption, and social interaction. Drugs of abuse co-opt these neural pathways, which can lead to addiction. Here, we use Drosophila melanogaster to investigate the relationship between natural and drug rewards. In males, mating increased Neuropeptide F (NPF) levels, whereas sexual deprivation reduced NPF. Activation or inhibition of the NPF system in turn enhanced or reduced ethanol preference. These results thus link sexual experience, NPF system activity, and ethanol consumption. Artificial activation of NPF neurons was in itself rewarding and precluded the ability of ethanol to act as a reward. We propose that activity of the NPF/NPF receptor axis represents the state of the fly reward system and modifies behavior accordingly.
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